USA Basketball’s U19 FIBA World Championship team earned an exhibition win on Tuesday as they opened up international play with a 90-82 comeback victory over Greece.

Trailing at halftime and losing by three entering the fourth quarter, Team USA came back in the fourth quarter in-part thanks to a big effort from Purdue signee Caleb Swanigan. The big man scored 10 of his team-high 16 points in the final frame as the USA defense helped propel them to a 19-4 run over a five-minute period in the fourth.

Villanova commit Jalen Brunson was also outstanding at point guard for the Americans, scoring 15 points on 7-for-12 shooting and handing out nine assists with only one turnover. Georgetown sophomore L.J. Peak added 13 points while five-star Class of 2016 power forward Harry Giles had 12 points. Class of 2016 wing Josh Jackson, regarded by Rivals as the No. 1 player in the national class, added 11 points, 10 rebounds, four assists and three steals in the win.

Guard Dimitrios Stamatis led Greece with 29 points in the loss.

The FIBA U19 World Championships begin on June 27 and run through July 5. USA finds itself in Group A and open the event with pool play against Iran on June 27, Croatia on June 28 and Egypt on June 30.

With the roster pared down to 12 players earlier this week, United State U19 head coach Sean Miller and his staff are preparing the team for the FIBA u19 World Championships which are scheduled to begin June 27 in Heraklion, Crete.

One of the players on the roster is guard Isaiah Briscoe, a Kentucky signee rated amongst the best players in the Class of 2014, and on Thursday night the New Jersey native suffered an injury during practice.

A source confirmed to NBC Sports that Briscoe suffered a head injury during the session, and with the team scheduled to depart Friday he needs to pass a concussion test in order to make the trip. News of Briscoe’s injury was first reported by CBSSports.com.

The United States doesn’t lack for players who can handle the playmaking responsibilities, with incoming college freshmen Jalen Brunson (Villanova) and Jawun Evans (Oklahoma State) making the roster, and they also have depth on the wings with Josh Jackson, Terrance Ferguson, L.J. Peak, Jayson Tatum and Allonzo Trier manning those spots.

But even with those options, to lose a player of Briscoe’s caliber would hurt should the injury result in his being unable to make the trip.

Of the four finalists who didn’t make the team two, Virginia Tech’s Justin Bibbs and Vanderbilt’s Riley LaChance, were perimeter players with forwards Brekkott Chapman (Utah) and Vince Edwards (Purdue) being the others.

Team USA got all 12 players in the scoring column on Saturday as they rolled past Angola 99-56 in pool play at the FIBA U17 World Championships in Dubai.

The two-time defending champion Americans held off Greece on Friday and jumped out to a 27-5 lead in crushing Angola from the opening tip.

Class of 2016 forward Harry Giles led the charge for the Americans, scoring a team-high 14 points and also tallying six steals as he led the charge as the head of the full court pressure for the United States. Angola simply couldn’t handle the pressure the United States threw at them, as they were held to 29 percent shooting 21-for-71 and had 28 turnovers.

Team USA plays its next game on Monday at 10:45 a.m. EST against the Philippines and is off to a very good 2-0 start in the World Championships. You can view the full American schedule and roster here.